In accordance with the requirements of citation databases, proper citation of publications appearing in our Quarterly should include the full name of the journal in Polish and English without Polish diacritical marks, i.e. "Eksploatacja i Niezawodnosc – Maintenance and Reliability".

Task „Implementation of procedures ensuring the originality of scientific papers published in the quarterly „Eksploatacja i Niezawodność – Maintenance and Reliability” financed under contract 532/P-DUN/2018 from the funds of the Minister of Science and Higher Education for science dissemination activities.

Structure of technical objects maintenance science

Scope and structure of maintenance science were presented and described in the paper. "Maintenance" and "maintenance process" concepts were defmed, as well. Aim of maintenance science was presented and characterized by the author. Finał results can be used for higher education curriculum modification, new scientific disciplines introduction and proper refmement ofpresent lectures topics.

Experimental anałysis o f automotive engine conditions of operation

The paper presents results of research of automotive engine working conditions during the actual road operation. Investigations were done using 2,2, MPFI Holden gasoline engine mounted on the deliyery truck Lublin II. Obtained results were transformed into time density tables representing particular states of operation of the engine. The paper is summarized with some conclusions.

Provision of Operation Reliability of a Meansof Transport

The fact that reliability of a product - technical object - almost unconditionally decreases, and without interference with the stage of the project it will usually not increase; is reflected in this contribution. The level of operation, use, maintenance, service, etc may influence the rate of the reliability fall. All these phenomena are also connected with the economic costs.

An operational evaluation of products on the basis of industrial machines

The correct evaluation of the functionality of products, from the point of view of their operational use, is of utmost importance both for the manufacturer and the designer of the products. A more detailed analysis of the operational functionality of products can be found in available sources [l] [2]. The paper gives an example of determining the functionality for a hypothetical industrial machine (excavator) in the form of a procedure presented in points.

Impact of selected operation conditions of a car combustion engine on its start-up parameters

Engine start-up seems to be one of its most important functional states. At the start-up the engine develops mechanic energy (internally) to overcome resistance to motion and then it is made to operate independently at idle running. Due to unfavourable physical processes that take place during each engine start-up there is an increased emission of toxic compounds of exhaust gas and the wear of selected tribological engine units is intensified. The extent of such negative processes depends on service conditions of a combustion engine. which also affect the engine start-up itself. Thus. it seems necessary to estimate the relations between parameters of toxic combustion engine start-up and service conditions. In order to identify the impact of internal and external factors affecting the engine there is a need to carry out traction operational tests of the vehicles in their real operational environment. The paper deals with a description of such tests and presents a statistical analysis of their results.